英语词组on the alert是什么意思，短语翻译、用法及例句-英语词组固定搭配大全

词组	on the alert
释义	on the alertadj. phr.Alert; watchful; careful. 警惕的；密切注意的；小心的。◆ Campers must be on the alert for poison ivy and poison oak.野营者必须密切注意气根毒藤和栎叶毒漆树。
随便看	glance off glass ceiling globe-trotter gloss over glutton for punishment gnaw at someone go about go about one's business go after go against the grain go ahead goal line go all out go along go ape go around go around in circles go astray go at go at it hammer and tongs go away go-back go back on one's word go bail for gobble up

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